This may be that but not only
Wouldn't be the first transmissible disease where males are more suceptible (aside socioeconomic situation) than women
Something linked to genetical protection of the future of the specie
Beside that, some blood groups seem also more susceptible than other (O seems a bit more protective)
Which was also described in other infectious diseases
There's a new bit of information about COVID-19 you may have heard.
www.sciencealert.com
(beware, the bacth analysed is small)
Individual genetic pattern may play a role too but it is unclear how
Finally there are plenty of others factors that make the correlations difficult to conclude on (virus concentration intake, time of contact, strain ? previous viral infection, fragility of the lungs etc etc )